Collapsible chair



Jan. 13, 1931. o. w. HAMBURG coLLAPsIBLE CHAIR Filed May 25, 1929 2 Sheets-Sheet 1 IN V EN TOR. y @fr0 WMM/50@ A ATTORNEY Jan. 13, 1931. o. w. HAMBURG 1,788,832

COLLAPSIBLE CHAIR Filed May 25. 1929 v 2 sheets-sheet 2 -fefj .zal je y d f g f l H 106' @E fs 0 4M-ff /p J2 Q6 INVENToR.

jy/'[65 jg 0770 #VM/1450@ @MQW/1MM ATTORNEY` the cross portion of the'T` arel'similar to the Y the rearward movement ear portions 2d and 2e and are inspaced alined relation thereto. These extended portions 3?) and 3c form the other hinge elements for supporting the back l and rearlegs 5, respectively, of the chair.v

The'bael: member .llv of the chair consists of lthe upper surface of the seat 1 so as to permit the back to fold flat against the seat,

as shown in Fig. 2. The portion'of eachl up- .Y *l right member-4a below Vthe pivotal point thereof extends past therear edgeof the seat frame and forms a stop 4c, as shown in Figs. 2 and 5, which engages the seat 1 and limits ofthe baekvme'mber 4 relative thereto.`

. j Pivotally.; mounted by its upperf'end between each lower earportion 2eV and its corresponding lower extended portionc isa rear Ylegmember5;. Secured to the baclrof each e leg-member andy projecting Vupwardly from rthe rear side thereof is a Vstop Vmember 6,

which consists offa'lat piece ofY material adapted' to Vbear against .the rear side 'of the stop. portionde of the uprightca when Athe chair is in its open position shown in Figs. 1 and 5.k Thus when1 thefchair is -open'the back member 4 vcannot move rearwardly vbecausel ofthe stop portion le and cannot moveV forwardly because of the stop member 6. v

VSecured to the under sideY of the forward cross memberle of the seat frame just within the. inner margin of the side members of said frameis a pair of front; legfhinges'?.V

Eachhinge is substantially yU-shaped and secured by its V'cross portion to the underside y of the .seatframewith its leg portions eX-' v 45 tending*l downwardly. Pivotally `mounted between thesel'eg portions ofl each hinge .so

asrto swing into flatadjacent relation to the seat 1 is a front VlegS:l yRupngs 9-extend between the twojfrontlegs 8 so as to hold themV :in proper spaced relation toeachy other.-

,Folding braces 10 are adaptedY to hold the 'front and rear legs in properextended relation to the seat land to Veach other.` One pair A ofy these braces extend from the front. legs upwardly and-rearwardly to the innerL edge of the side members 1c of the seat frame 1a.

YA second Vpair B ofgfolding braceslO extend from this point rearwardlyV and downward- A i ly to theinner sides ofthe rear legsn.` .A

thirdY pair C of folding braces 10 may'provided which vextendy between the frontand Vrear legsijoining said legs at the saine place vas the `irstand second foldingv braces. Each folding-brace 10 consists of two arm members 10a andlOb. Eaoharm member'10a is pro vided with a transversely extending offset y portion which when folded against the arm forms a longitudinally extending channel 10e of U-shaped cross section. The arm 10b of each folding brace 10is adapted to extend into the channel 100 and is Vpivotally connected vto the arm 10a by a rivet 10d extending transversely vthrough the channel. The channelV 10c limits the movement of one arm relative to the other vso that thebrace can only be col- "l'apsed by bending it towards the pivotal point oflthe respective legs with the vseat 1.

In order to prevent accidental buckling whenv the chair is in-open position, atie brace 11 extends between Ythe corresponding brace members 10of the bracepairs A and B'.

Each. tie brace 11A is' pivotally connected, to one member of the folding brace'pair B and is provided with a notch 11b in the under side of*itsextendededgewhich is adapted to engage a portion Y10e Aof the rivet shank, afs-shown in IFigsjG andi; .Y

The brace pair C assists the action of the tie brace 11` and issimilarzto the other pairs A and B of the foldingbraces 1,()v except vthat au notch V10fis provided at .theirl vone ends for'` engaging the'shanksupportingthe brace pair A relative to the front legsS.

`'Therear legs 5 areheldin properrelation to lone'another byerear'leg braces 12, as shownin Fig;.8.- ,c Y

Eachreardeg 5 isadapted when foldedto lie flatagainst the `under side of the-seat member'l iush Y' with the outer edgepof its corresponding side member 1c, as shown best in Fig. 10. 1 EachV front leg 8` when folded rests against'the under side ofthe correspon ding side member 1c in spaced relation to the corresponding rear leg 5. The legs 5` and 8 are-tapered so thatY there will be suilicient space between vthem toreceive the folding Vbraces 10 and tie-brace ll-when they are'in their folded position, shown in Fig. 10.

The chair is foldedasffollowsrThe tie braces 11 `and 'sets of the folding braces 10 arereleased,then Ythefolding braces 10 of llO the'brace set .A are folded permitting the Y Vfront legs to collapse against the under side of the Vseat; Ina similar manner the brace 'Y set B is folded4 permitting the rear legs to 1 collapsaagainst the vunder sidev of the seat so thatthe bracing 12 thereof extends across' the front legs8`far'1d holds. 'them in their folded position, as indicated inFig,V 10.y Lastly' thebafckmember P-is folded across thetop ofltheseat; the stops `(Shaving been Y moved out ofjengagenient,witlrthe back L when the rear legs fw'erecollapsed. 1

-A handle lzislprovided yonf'a rear leg' and 'afhandle ,14 isprovidedon one of the lupvf rightslla sothatwhenthe chair is folded tothe positionjshownin Fig. 2, the handles are opposite one another and may be grasped v togetherbyV one hand; Yllhen the two handles n are. graspedthechair isvheldvv in 1 i position and cannot accidentally open k*up unless the handles are released. o

yThe structure shown in Fig. 3`is similar tothe hereinbefore described stri'icture eX- cept that the ears 2e of the hinges 2 and the projections 3o' of the hinges 3 are vremoved*V together with the hinges 7, rear legs 5,;frontV legs 8, and bracing therefor. In this case the handle/13 is placed on the side of the seatl, 1

' asy shovvny in Fig. 3.

It is obvious from the construction asillustrated in the drawings and described inthe i foregoing specification, that there is provided a collapsible chair as set forth in the objects ofthe invention, and though I have shovvn y and described a particularconstruction, com'- bination and arrangement of parts and portions, and a certain modification thereof, I do not Wish to be limited to this yparticular construction, combination and arrangement, norl to the modification, but desire to include in the scope of'my invention the construction, combination and'y arrangement substantially as set-forth in the appended claims.

n Havingthus described my invention, What I claim as 'new `and desire to secur'eby Letters Patent vis :l Y n t l. lIn a collapsible chair, a chair seat, a pair 7 of hinge elementshaving saddle portions con-` nectinfg the rear and side portions of said chair seat, a second pair of hinge elements,

N each supportedin' spaced relation to a hinge portion .of each first i'hinge element by the members of said 'chair seat joined by said second hinge elements -againstsaid seat. 2. .In a collapsible chair, a chair seat, a pair V n `of hinge elementshaving saddle portions consaddle portions, and a back member pivotally connected with its corresponding first and.`

and adapted tor fold' nectingthe rear-'an'dside portions of said chair seat, a second ypair of hinge elements each-supportedin spaced relation tota hinge t portion of each first hinge'element bythe n member.

members of said chair seat joinedby jsaid saddle portions, a back member pivotally connected` With lits corresponding firstV and sec-v,V ond vhinge elements and adapted to `fold against said seat, and stop means for limiting r rearWard-pivotal movement of said ,lback 3. 'In a ycollapsible chair, a chair `seat,a

' pair of hinge elements having saddle portions connecting 'contiguous rear .and side Y joiaeaby Said saddle portions, aback member having sidev portions pivotallyl connected yWith their correspondingl first and second portions of said chair seat, a second pair,` of

hinge elements each supported in spaced relation to. a hinge portion of each irsthinge element by theimembers of said chairV seat hinge elements andadapted-to fold againsty said seat, handle'means secured tothecentraly portions of contiguous-side portioiisof said` back and lseat equidistant relativ'efto the piv- Y mss/,essai an painter Isaias-ids parata-,whereby when; t collapse'd,V said Shandles are ypositioned:fside-V bercomprising a frame and a seat portion, a

pair@ of saddlemeans connecting thesidel and `rear members of-said,framegaifhinge element integral with each saddlefextendin'g #rearwardly loflsaid frame,V a: second-'pair ofi` hinge elements, each having a portion "thereofpor siti'onedv between an endofthe back member Y of said frameV andthe adjacent portion'of the` corresponding side member of said frame and f se'curedin saidposition by `means holding said saddles,each of saidfsecond pair of hinge elements` extending' in spaced relation to a corresponding first hinge element, and a chair lback pivotally' supported by said first and f second hinge elements, said chair back adapted to fold against lsaidchair seat. 1.

ber. comprisingfa-frame and a seat yportioma pair of saddle means connectingjth'e side and rear members of said frame, a hingeV element integral with each `saddle extending'rear'- Wardlyof said frame, a second pair of hinge elements, each having avportion thereof positioned betvveen'an end of the backmeniber 'i of said frameand theadjacenty portion of the' lcorresponding side member of said frame and secured in ysaid position byl means 'holding said. saddles, each ofgsaid. "second pair vTof hinge elements extending in spaced relation toia corresponding first .hinge element, a1 chairV back pivotally supported by said first'an'd secvond hinge elements, said chair back adapted to fold yagainst said chair seat, and vhandle A `means secured-to mutually foldable portions fof said chair,"saidhandles adapted to lie side by side vvhen said chair is collapsed and when jointlygraspedpto hold said chair in folded position.

6. Ina colla y psible chair, achair seat mem- -ber comprising a frameI and a seat portion, a

5. Ina collapsiblefchain a chair seatmemlrearfine'mbe'rs of said frame, a hingeI element i integral `vvith each saddle n extending'` rearingfflush With-the lower surface of the seat,

said chair back` adapted tok fold against said chair seat,a pair of chair legs pivotallycons nected with said firstfandsecond hinge elements, theiry upper ends in abutment with the ff 11o kl f -pa'iroffsaddle means connecting the side and` l y ed to shift into folded relation with said chair i lower endslof saidjside members, Yand adapt,-

seat, an extensionqstrap on theupper end of said legsoverlapping, the lower. end of saidV o dajyT of May, 1929. i Y .n Y OTTO W.y HAMBURG.'

side members, and a second pair of legs pivotally supported at the forward portion of said chair seat and adapted to shift into folded relation with'said chair seat. Y f

- In testimony whereof, I. have hereunto kset my hand atl San Diego, California, this 18th 

